Home / 18,639.72-25,719.83-10,680.46

Finding the Fourth Proportional to 18,639.72, 25,719.83 and 10,680.46

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Solution

The fourth proportional to 18,639.72, 25,719.83 and 10,680.46 is: 14,737.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,639.72 : 25,719.83 = 10,680.46 : x
  2. Step 2: Convert to fraction form
    18,639.72/25,719.83 = 10,680.46/x
  3. Step 3: Cross multiply
    18,639.72x = 25,719.83 × 10,680.46
  4. Step 4: Simplify right side
    18,639.72x = 274,699,537.87
  5. Step 5: Solve for x
    x = 274,699,537.87/18,639.72
  6. Step 6: Final answer
    x = 14,737.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.